Progressive damage visualization and tensile failure analysis of three-dimensional braided composites by acoustic emission and micro-CT

Zhou, Wei; Qin, Reng; Han, Kang-ning; Wei, Zhi-Yuan; Ma, Lianhua

doi:10.1016/j.polymertesting.2020.106881

Cited by 25 publications

(10 citation statements)

References 42 publications

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“…Due to the stress concentration, obvious cracks appear when the specimen is fractured. Figure 10 shows a variety of failure mechanisms such as matrix cracking, interfacial debonding, and fiber fracture for the specimens under instantaneous conditions, which is consistent the behaviors observed by Zhou et al 41 The results show that the situation is consistent with the AE results. The matrix filling mode and the fiber distribution of 3D printed specimens with glass fiber are shown in Figure 17(e), which is consistent with the results in Figure 2(a) and Figure 3(c) given above.…”

Section: Resultssupporting

confidence: 87%

Experimental investigation on the mechanical behavior and damage of 3D printed composites under three-point bending

Zhang

Pan

et al. 2022

Journal of Composite Materials

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Three-dimensional (3D) printing has been triumphantly applied for the manufacture of various composite components. In this work, acoustic emission (AE), X-ray micro-computed tomography (Micro-CT) are used in conjunction with digital image correlation (DIC) measurement to investigate the mechanical behaviors of 3D printed continuous fiber reinforced composites under three-point bending test. Meanwhile, several mechanical experiments are carried out to study the flexural properties of three kinds of composite specimens, among which the specimens with larger glass fiber content exhibit more superior mechanical properties. Furthermore, AE response characterizations and microscopic damage morphology are also examined. In consequence, the complementary nondestructive testing (NDT) technology combining AE, DIC, and Micro CT is successfully applied to evaluate the mechanical behaviors of 3D printed composites, and the flexural deformation and damage are comparatively investigated for different composite specimens. The cross-validation results of cluster analysis (k-means), K-Nearest Neighbor (KNN) and principal component analysis (PCA) show that AE parameters including frequency, amplitude, and RA value (rise time divided by peak amplitude) are closely associated with the damage process of different specimens. The results show that the PCA can confirm the selected K-means cluster analysis parameters (peak frequency and peak amplitude) and the dimensionality reduction effects of 20% glass fiber specimens have the best results, indicating that the proportion of the principal components extracted can represent the original parameters is 81%. It was also confirmed that the supervised learning KNN algorithm corresponding to different damage patterns can verify the unsupervised learning k-means cluster. Correspondingly, the strain fields characterized by DIC are reasonably matched with the AE signal responses. In addition, the critical damage and delamination mechanisms of the 3D printed continuous fiber reinforced composites are clearly revealed by Micro-CT characterization.

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Section: Resultssupporting

confidence: 87%

Experimental investigation on the mechanical behavior and damage of 3D printed composites under three-point bending

Zhang

Pan

et al. 2022

Journal of Composite Materials

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“…An increase in sound absorption has been observed by increasing frequency. Initially from 0-1000 Hz, rapid growth in sound absorption was recorded after the increase rate was reduced [70][71][72][73][74][75]. Several other researchers have reported on the influence of frequency on the acoustic properties of composite materials based on fibers [76][77][78][79][80].…”

Section: Effect Of Frequencymentioning

confidence: 99%

Factors Affecting Acoustic Properties of Natural-Fiber-Based Materials and Composites: A Review

et al. 2021

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Recently, very rapid growth has been observed in the innovations and use of natural-fiber-based materials and composites for acoustic applications due to their environmentally friendly nature, low cost, and good acoustic absorption capability. However, there are still challenges for researchers to improve the mechanical and acoustic properties of natural fiber composites. In contrast, synthetic fiber-based composites have good mechanical properties and can be used in a wide range of structural and automotive applications. This review aims to provide a short overview of the different factors that affect the acoustic properties of natural-fiber-based materials and composites. The various factors that influence acoustic performance are fiber type, fineness, length, orientation, density, volume fraction in the composite, thickness, level of compression, and design. The details of various factors affecting the acoustic behavior of the fiber-based composites are described. Natural-fiber-based composites exhibit relatively good sound absorption capability due to their porous structure. Surface modification by alkali treatment can enhance the sound absorption performance. These materials can be used in buildings and interiors for efficient sound insulation.

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“…Zhou et al 70 investigated tensile failure and damage visualization based on progressive damage mechanics of three-dimensional braided composites by using Micro-CT imaging. As described in Figure 31, the specimen mainly experienced the initiation and propagation of cracking and debonding but there are multiple damage mechanisms (matrix cracking, bundle cracking, matrix/yarn interfacial debonding, interface slip, fiber fracture, bundle fracture, and fiber pull-out) in the failed specimen.…”

Section: Mechanical Properties Of the Fiber Reinforced Compositesmentioning

confidence: 99%

A review of applications of CT imaging on fiber reinforced composites

Gao

Xin

et al. 2021

Journal of Composite Materials

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With the development of X-ray computed tomography over the last few decades, it is gradually considered to be a powerful tool in the field of materials research. This paper presents a comprehensive review of applications of CT imaging on fiber reinforced composites, from polymer composites to ceramic matrix composites. The principle of X-ray CT and experimental tomography setups was described firstly. Then, in situ experimental devices developed in recent years were illustrated. Furthermore, the applications of X-ray CT imaging on manufacturing process, modeling, mechanical damage, physical, and chemical behaviors were reviewed in detail. Besides, advantages and limitations of X-ray CT imaging were pointed out and the future development was prospected.

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Progressive damage visualization and tensile failure analysis of three-dimensional braided composites by acoustic emission and micro-CT

Cited by 25 publications

References 42 publications

Experimental investigation on the mechanical behavior and damage of 3D printed composites under three-point bending

Experimental investigation on the mechanical behavior and damage of 3D printed composites under three-point bending

Factors Affecting Acoustic Properties of Natural-Fiber-Based Materials and Composites: A Review

A review of applications of CT imaging on fiber reinforced composites

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